Unless youre aiming for a specific deck strategy, you want to diversify the types of Pokmon in your deck
Its a part of this list largely for its moves and the unique effects that each provides
Heck, even my 60 card decks only ran like 20-22 lands while my Average Mana Value was like 3.75+
Its not sure yet whether these are print run differences, or factory differences (perhaps even from different countries), but there seems to be three versions available for each of the Base Set Commons, Uncommons, and Energies: Semi-Glossy Matte Matte with Semi-Glossy Borders When you look at the image above: the top card is the third variations
Would you try to use Obosh as a Companion
If those permanents have three or more card types each opponent loses three life, you gain three life and draw three cards